These are the same bass strings Rogue uses in prepackaged retail sets. What's the difference? We package 3 strings of the same gauge in airtight vinyl bags with a package of silica gel to protect against unwanted moisture so they last longer than typical string sets. We also pack these bulk strings in big, loose coils to avoid compressing or stretching the windings, so they sound better than tightly coiled strings. Rogue Strings are made exclusively for us by a famous manufacturer, employing the finest materials and latest manufacturing methods.